The explosion took place around 3:55 AM between Barrackpore and Titagarh railway stations while the train was on the Sealdah main section, reported the Indian Express.

According to reports, the passengers allegedly got into an altercation with miscreants who hurled the bomb. Police, including RPF, Barrackpore and CID's Bomb Squad are checking the train which has been halted at Barrackpore station, the TOI report said.